package config

import (
	"os"
	"path/filepath"
	"testing"
)

func TestLoadSeeds(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.DefaultVersion != "bt" || cfg.Offline {
		t.Errorf("defaults wrong: %+v", cfg)
	}
	if cfg.Lectionary != "new" {
		t.Errorf("lectionary default wrong: %+v", cfg)
	}
	if _, err := os.Stat(filepath.Join(dir, "lectio", "config.toml")); err != nil {
		t.Error("config not seeded")
	}
}

func TestLoadOverride(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	os.MkdirAll(filepath.Join(dir, "lectio"), 0o755)
	os.WriteFile(filepath.Join(dir, "lectio", "config.toml"),
		[]byte("offline = true\ndefault_version = \"wuj\"\n"), 0o644)
	cfg, _ := Load()
	if !cfg.Offline || cfg.DefaultVersion != "wuj" {
		t.Errorf("override not applied: %+v", cfg)
	}
}

func TestWebDefaults(t *testing.T) {
	def := Default()
	if def.WebMono {
		t.Errorf("WebMono default should be false")
	}
	if len(def.WebVersions) != 0 {
		t.Errorf("WebVersions default should be empty, got %v", def.WebVersions)
	}
	if def.WebTheme != "transfiguration" {
		t.Errorf("WebTheme default wrong: got %q, want %q", def.WebTheme, "transfiguration")
	}
	if def.WebPort != 0 {
		t.Errorf("WebPort default wrong: got %d, want 0", def.WebPort)
	}
}

func TestWebLoadsFromSeed(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.WebTheme != "transfiguration" {
		t.Errorf("WebTheme from seed wrong: got %q, want %q", cfg.WebTheme, "transfiguration")
	}
	if cfg.WebPort != 0 {
		t.Errorf("WebPort from seed wrong: got %d, want 0", cfg.WebPort)
	}
	if cfg.WebDisplay != "horizontal" {
		t.Errorf("WebDisplay from seed wrong: got %q, want %q", cfg.WebDisplay, "horizontal")
	}
}

func TestWebDisplayDefault(t *testing.T) {
	def := Default()
	if def.WebDisplay != "horizontal" {
		t.Errorf("WebDisplay default wrong: got %q, want %q", def.WebDisplay, "horizontal")
	}
}

func TestWebDisplayLoadsSetting(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	os.MkdirAll(filepath.Join(dir, "lectio"), 0o755)
	os.WriteFile(filepath.Join(dir, "lectio", "config.toml"),
		[]byte("web_display = \"vertical\"\n"), 0o644)
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.WebDisplay != "vertical" {
		t.Errorf("WebDisplay = %q, want %q", cfg.WebDisplay, "vertical")
	}
}

func TestWebDisplayNormalizesUnknown(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	os.MkdirAll(filepath.Join(dir, "lectio"), 0o755)
	os.WriteFile(filepath.Join(dir, "lectio", "config.toml"),
		[]byte("web_display = \"bogus\"\n"), 0o644)
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.WebDisplay != "horizontal" {
		t.Errorf("WebDisplay = %q, want %q (normalized from bogus)", cfg.WebDisplay, "horizontal")
	}
}

func TestUILanguageDefault(t *testing.T) {
	def := Default()
	if def.UILanguage != "en" {
		t.Errorf("UILanguage default wrong: got %q, want %q", def.UILanguage, "en")
	}
}

func TestUILanguageLoadsPL(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	os.MkdirAll(filepath.Join(dir, "lectio"), 0o755)
	os.WriteFile(filepath.Join(dir, "lectio", "config.toml"),
		[]byte("ui_language = \"pl\"\n"), 0o644)
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.UILanguage != "pl" {
		t.Errorf("UILanguage = %q, want %q", cfg.UILanguage, "pl")
	}
}

func TestUILanguageNormalizesUnknown(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	os.MkdirAll(filepath.Join(dir, "lectio"), 0o755)
	os.WriteFile(filepath.Join(dir, "lectio", "config.toml"),
		[]byte("ui_language = \"bogus\"\n"), 0o644)
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.UILanguage != "en" {
		t.Errorf("UILanguage = %q, want %q (normalized from bogus)", cfg.UILanguage, "en")
	}
}

func TestPagerDefault(t *testing.T) {
	def := Default()
	if def.Pager != "" {
		t.Errorf("Pager default should be empty, got %q", def.Pager)
	}
}

func TestPagerLoadsFromSeed(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.Pager != "" {
		t.Errorf("Pager from seed wrong: got %q, want empty", cfg.Pager)
	}
}

func TestPagerLoadsSetting(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_CONFIG_HOME", dir)
	os.MkdirAll(filepath.Join(dir, "lectio"), 0o755)
	os.WriteFile(filepath.Join(dir, "lectio", "config.toml"),
		[]byte("pager = \"less -R\"\n"), 0o644)
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.Pager != "less -R" {
		t.Errorf("Pager = %q, want %q", cfg.Pager, "less -R")
	}
}

func TestSiglaStyleDefaultsAndDialect(t *testing.T) {
	if got := Default().SiglaStyle; got != "auto" {
		t.Errorf("default SiglaStyle=%q want auto", got)
	}
	cases := []struct{ style, ui, want string }{
		{"auto", "en", "en"},
		{"auto", "pl", "pl"},
		{"polish", "en", "pl"},
		{"english", "pl", "en"},
	}
	for _, c := range cases {
		cfg := Config{SiglaStyle: NormalizeSiglaStyle(c.style), UILanguage: c.ui}
		if got := cfg.SiglaLang(); got != c.want {
			t.Errorf("SiglaLang(style=%q,ui=%q)=%q want %q", c.style, c.ui, got, c.want)
		}
	}
	if NormalizeSiglaStyle("nonsense") != "auto" {
		t.Error("unknown sigla_style should normalize to auto")
	}
}

func TestPartShown(t *testing.T) {
	var empty Config
	if !empty.PartShown("new", "psalm") {
		t.Error("nil Parts: psalm should be shown")
	}
	if !empty.PartShown("new", "ewangelia") {
		t.Error("nil Parts: ewangelia should be shown")
	}

	hidden := Config{Parts: map[string]map[string]bool{
		"new": {"psalm": false},
	}}
	if hidden.PartShown("new", "psalm") {
		t.Error("psalm explicitly false should be hidden")
	}
	if !hidden.PartShown("new", "ewangelia") {
		t.Error("ewangelia not mentioned should still be shown")
	}
}